With recent Islamic terrorist attacks, it is hard not to wonder what is being conveyed to believers of Islam on how to treat people of the world, especially unbelievers of Islam. Author John J. Isaias had the same curiosity after viewing the 9/11 attacks, spending the next decade studying Islam and Christianity to see what consisted of this fight over religion. His findings embodied his new doctrinal comparison study, What Christians Need to Know About the Quran and Islam, where he presents a comparison study of the Bible and the Quran. Among the topics he compares and contrasts between the two holy books are the belief of Jesus, depiction of Satan and understanding of eternal life. The self-exaltation of Muhammad and Allah, compared with the Trinity, is also dissected, using excerpts from both the Quran and the Bible. The knowledge, John hopes, will help readers see the truth in both religions.